Which one of the following have lowest octane number ?

Question

Which one of the following have lowest octane number ? (A) Iso-octane (B) n-Heptane (C) n-Hexane (D) n-Hexadecane

Tardigrade Admin · Accepted Answer

Straight chain alkanes have lower octane numbers than branched chain alkanes. Further, the value of octane number decreases with increase in length of carbon chain. Therefore, n-hexadecane (C16H34) has lowest octane number.

Q. Which one of the following have lowest octane number ?

Iso-octane

n-Heptane

n-Hexane

n-Hexadecane

Straight chain alkanes have lower octane numbers than branched chain alkanes. Further, the value of octane number decreases with increase in length of carbon chain. Therefore, n-hexadecane $(C_{16} H_{34})$ has lowest octane number.

Q. Which one of the following have lowest octane number ?

Iso-octane

n-Heptane

n-Hexane

n-Hexadecane

Straight chain alkanes have lower octane numbers than branched chain alkanes. Further, the value of octane number decreases with increase in length of carbon chain. Therefore, n-hexadecane (C16​H34​) has lowest octane number.

Straight chain alkanes have lower octane numbers than branched chain alkanes. Further, the value of octane number decreases with increase in length of carbon chain. Therefore, n-hexadecane $(C_{16} H_{34})$ has lowest octane number.